Semaglutide Reconstitution Calculator
Semaglutide is a GLP-1 receptor agonist. This page shows how to reconstitute it and read the result on a syringe — the calculator does the arithmetic for you.
Status: The prescription products Ozempic and Wegovy are FDA-approved; research-chem semaglutide is not the approved product and is not for human use.
The math
Concentration = vial ÷ water · Units = (dose ÷ concentration) × 100
Semaglutide is measured in small amounts, so getting the concentration and unit math right matters. The calculator converts your mix into the exact units on a U-100 syringe.
Worked example
Illustrative numbers only — not a dose recommendation.
Example
Vial5 mg
Bacteriostatic water2 mL
Concentration2.5 mg/mL
Each 10 units (0.1 mL) contains250 mcg
How to use the calculator
- Open the calculator and enter your Semaglutide vial size.
- Enter your bacteriostatic water volume, then your dose.
- Read off the units to draw and doses per vial.
Planning a full cycle? Work out vials, syringes & swabs →
Frequently asked questions
How do I reconstitute Semaglutide?
Add bacteriostatic water to the lyophilized vial to reach a concentration you can measure. For example, 5 mg in 2 mL of water gives 2.5 mg/mL, so each 10 units (0.1 mL) on a U-100 syringe contains about 250 mcg of Semaglutide. Swirl gently rather than shaking.
How many units of Semaglutide do I draw?
Divide your intended dose by the concentration to get the volume in mL, then multiply by 100 for a U-100 syringe. The calculator does this automatically once you enter your vial size, water volume and dose.
What vial sizes does Semaglutide come in?
Semaglutide is commonly supplied as 2 mg, 5 mg, 10 mg. The amount in the vial does not change with how much water you add — water only sets the concentration.
Is Semaglutide approved for human use?
The prescription products Ozempic and Wegovy are FDA-approved; research-chem semaglutide is not the approved product and is not for human use. This calculator only performs arithmetic on the numbers you enter and does not recommend any dose.